SanDisk Extreme UHS-I microSDXC Card SDSDQX Review

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MicroSD Card Testing Methodology

MicroSD cards are built on solid-state NAND flash technology, very similar to SSDs. Our test results were obtained after each SSD had been prepared using DISKPART or Sanitary Erase tools whenever possible. As a word of caution, applications such as these offer immediate but temporary restoration of original ‘pristine’ performance levels. In our tests, we discovered that the maximum performance results (charted) would decay as subsequent tests were performed. Benchmark Reviews includes both bandwidth benchmarks and application speed tests to present a conclusive measurement of product performance.

Test Results Disclaimer

This article utilizes benchmark software tools to produce operational IOPS performance and bandwidth speed results. Each test was conducted in a specific fashion, and repeated for all products. These test results are not comparable to any other benchmark application, neither on this website or another, regardless of similar IOPS or MB/s terminology in the scores. The test results in this project are only intended to be compared to the other test results conducted in identical fashion for this article.